package com.example.demo;

/**
 * @author luowj12
 * @since 2021/4/12 17:29
 */
public class MainTest {

    public static void main(String[] args) {

        /*int i=1;
        int j=1;

        System.out.println("i"+i++);
        System.out.println("j"+ ++j);*/

        String cc = "1";

        System.out.println("byte---------" +Byte.valueOf(cc));

        String aa ="没修改";
        //String bb = new String("没修改");
        System.out.println("1 ----------"+aa);
        change(aa);
        System.out.println("2 ----------"+aa);
    }

    public static void change(String str){
        str = "修改了";
        System.out.println("3 ----------"+str);
    }
}
